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4028 results about "Test fixture" patented technology

A test fixture is something used to consistently test some item, device, or piece of software. Test fixtures can be found when testing electronics, software and physical devices.

Method of correcting measurement error and electronic component characteristic measurement apparatus

A high-precision, multi-port compatible, relative correction method and apparatus for correcting measurement errors covering an increase in the number of ports of a non-coaxial electronic component, in which a relative correction adapter 31 is provided that is formed of a two-port network connected to each port of a production test fixture 5B adjacent to a measurement apparatus. The relative correction adapter has a characteristic that modifies the electrical characteristics generated by the production test fixture 5B having an electronic component under test mounted thereon into electrical characteristics generated by a standard test fixture 5A having the electronic component under test mounted thereon. An error factor of the relative correction adapter 31 is identified from a standard test fixture measurement value and a production test fixture measurement value of a correction data acquisition specimen 11B. A production test fixture measurement value of the electronic component under test 11A is corrected with the error factor of the relative correction adapter 31 to thereby obtain the standard test fixture measurement value of the electronic component under test 11A which is assumed to be obtained when the electronic component under test 11A.
Owner:MURATA MFG CO LTD

Fluid sample distriution system for test device

Diagnostic products having multiple test strips within a unitary diagnostic test device, or test icon, are described herein. In the preferred embodiments of the diagnostic test device of this invention, a fluid sample distribution system is provided wherein a sample collection and distribution port is provided in the housing for receipt of a biologic fluid sample and the channeling of such sample onto a sample receiving web. The sample receiving web, which is located within the test device, is in fluid communication with an array of test strips, and is configured to deliver an aliquot of biologic fluid sample to the test site of each such test strip at essentially the same rate. In the preferred embodiments of this invention, the sample receiving web comprises at least one base segment and at least one branched segment. Each of the base and branched segments can be formed or cut from a common sheet of material or from separate sheet material and thereafter placed in contiguous relationship one another. The relative placement of the sample receiving web within the test device is coincident with a portion of each test strip and designed to effect the balanced distribution and delivery of an aliquot of the biologic fluid sample to the test site of each of the test strips within the test device.
Owner:BIONIKE

Test system and test method

The invention provides a test system and a test method. The testing system comprises a test fixture, a test device and a differential tunable matching network, wherein the test fixture is provided with a bearing structure for loading a chip to be tested and a test port electrically connected to the chip to be tested; the test device comprises a radio frequency signal source, a receiving unit and a processing and display unit; the radio frequency signal source is provided with at least one radio frequency test port; the receiving unit is used for at least receiving a reflected signal and a transmitted signal which are generated after a radio frequency signal passes through the chip to be tested; the processing and display unit is used for processing the received radio frequency signal and displaying the processed signal; and the differential tunable matching network is provided with an input port and a differential output port and is used for tuning the impedance of a load end including the chip to be tested to make the impedance of the load end matched with the internal resistance of the test device and providing the test device to measure the characteristic of the chip to be detected in the test fixture. Compared with the prior art, the invention has the advantages that: the differential tunable matching network is provided for realizing impedance matching, the test system and the test method are easy and convenient to operate, and a more accurate test result can be acquired.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device and method

The invention provides a natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device, and a test method. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experimental device comprises an acoustic wave receiving device, an acoustic wave transmitting device, and a resistivity testing device. The natural gas hydrate deposit dynamic triaxial mechanic-acoustic-electrical synchronous test experiment method comprises the steps that: step A, a hydrate sample is synthesized; step B, the synthesized hydrate sample is subjected to dynamic loading, and electric-acoustic-mechanical property tests are simultaneously carried out, until the sample is subjected to shearing damage. The invention provides a mechanical response characteristic research of indoor hydrate deposit under dynamic load. With the device and the method, mechanical, electrical, and acoustic parameter synchronous testing of hydrate deposit under dynamic load can be realized. With the test data, a relationship between mechanical parameters and wave velocity can be obtained by fitting.
Owner:PETROCHINA CO LTD

Detection analysis device for technical indexes of numerical control device

The invention discloses a detection analysis device for technical indexes of a numerical control device, belongs to a test device for the numerical control device, and solves the problems that the conventional detection analysis devices for the technical indexes of the numerical control device are not universal for various numerical control devices and the detected and analyzed technical indexes are not comprehensive. The detection analysis device comprises a data interface, a parameter setting module, a data processing module, an analog feedback module, an analysis evaluation module, a display module and a test code library. The data processing module computes the indication data received by the data interface, and the test result is output to the analysis evaluation module and the display module. The parameter setting module sets parameters of the analog feedback module. The test code library provides standard test G codes for each item to be tested. The detection analysis device for the technical indexes of the numerical control device simulates characteristics of actual servo drive, motor and machine tool by using the analog feedback module, computes corresponding feedback data, removes the influence of uncertainty of an actual electromechanical system and inconsistent processing performance of the machine tool, and can accurately and objectively analyze and evaluate each important technical index of the numerical control device.
Owner:HUAZHONG UNIV OF SCI & TECH +1
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